Rotary pump and motor.



G. F. NELSON.

ROTARY PUMP AND MOTOR.

AZJELZ'IATION FILED NO 18. 1910.

1998 458 Patentedv June W14 3mm toe G. F. NELSON.

ROTARY PUMP AND MOTOR.

APPLIGATIM' FILED NOV.18, 1910.

. 1,098,458, Patented June 2,1914.

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$51 55: ww L G. F. NELSON.

ROTARY PUMP AND MOTOR.

APPLICATION FILED Nov. 18, 1910.

1 ,OQSAEfi. Patented une 2, F314.

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awue/wtoz Wikmmoeo G. F. NEUSON.

ROTARY PUMP AND MOTOR.

APPLIOATION FILED NOV. 18. 1910.

Patented June 2,1914:

5 SHEETS-SHEET 4.

Wilnmeo P NELSQN. ROTARY PUMP AND MOTOR. APPLIfiATI-ON 211.21 1107.18, 19m.

atented June 2, 1914,

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All? (St/C776 un/Mamas Human STATES PATENT OFFICE.

GEORGE F. NELSON, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO HENRY MAY, OF WASHINGTON, DISTRICT OF COLUMBIA.

ROTARY PUMP AND MOTOR.

incense.

Patented June 2; 1914 7 Application filed November 18, 1910. Serial No. 593,0?9.

To all whom it may; concern: Y

Be it known that I, GEORGE F. NnLsoN, a citizen of the United States, residing at Washington, in the. District of Golumbia,

have invented a hep and useful improve-- ment in Rotary Pumps and Motors, of

which the following is :1 specification.

This invention is a new and useful construction of rotary pump and more particularly an improvement upon the rotary pump patented to McLean, Lyons and Clark. Numbers 90%,209, and 9%.817.

This improvement can also be utilized as a motor either of the air or water type and the invention is also capable of use as an air compressor and as a matter of fact the device can be used as a pump and compressor, or a motor and compressor or the device can be used as a combined motor, pump and compression or suction apparatus.

The object of my invention is to provide a simple and eflicient construction of rotary pump in which the pressure upon opposite sides of the piston will be substantially equalized or balanced and a still further object is to rovide a combined sealing and lubricating means and another object is to provide for the adjustment or shifting of the movable piston from the exterior of the device, thereby avoiding the necessity of opening the casing for the purpose of effecting such adjustment.

Another object of the invention is to provide exterior connections whereby fluid can be transferred from one ring or stage to another ring or stage, and these exterior connections also enable various combinations to be effected.

Another object of the invention is to provide for the intake and discharge of the fluid at various points thereby avoiding the possibility of a dead center.'

With thesevarious objects in view and also certain other objects as will appear hereinafter, lny invention consists in the various novelties of construction and also the novel manner of combining 0r arranging the parts all or which will be fully described hereinafter and pointed out in the claims.

In the drawings forming a part of this specification: Figure 1 is a perspective view of a pump or motor constructed in accordance with my invention. Fig. 2 is a vertical s'ectionalview, the dividing wall or parti- 5 tion being omitted, Fig. 3' is a top plan view, the cover and piston being removed. Fig. at is an inverted plan view of the piston. Fig. 5 is a top view of the piston. Fig. Sis aside elevation of the piston. Fig.

7 is an inverted plan view of the top of the toy casing. Fig. 8' is a. detail perspective view of the rotary shaft. Fig. 9 is a top View of the eccentric bushing. Fig. 10 is a side view. Fig. 11 is a detail perspective view of the sliding block carried by the piston. Fig.

12 is a top plan view of a slightly modified form of head or cylinder, the partition walls being arranged at various points in order to prevent a deadcenter. Fig. 13 is a, sectional .plan showing the arrangementmf the ports to and passages. Fig. 14 is an inverted plan view of the piston adapted to beused in connection with the cylinder or casing shown in Fig. 12. Figs. 15, i6, 17 18, and

19 are diagrammatic views showing the we manner of arranging the exterior connections whereby various combinations are obtained.

In carrying out myvinvention I prefer to arrange the device'horizontally upon a base 8G A, but it will of course be understood that 3 it can be arranged in any position desired. In practice the baseA is formed with legs or standards'B, which support the cylinder or casing C, which is. formed with a circular chamber provided with a series of concentric rings 0 extending upwardly as shown, saidrings being united to a partition or dividing wall C These series of rings C provide a series of concentric passages C so and a central chamber C and ports C communicate with the passages C upon one side of the partition C while ports C communica-te with the passages G upon the opposite side of said partition C said ports extending downwardly through the base and having their exit in the base portion B as most clearly shown.

C indicates a water passage for the purpose of keeping the device cool, water being 1 30 introduced through the pipes C and circulated around the casing.

Th; piston. comprises a circular plate D provided \vi i a series of concentric rin s D divided at D'" do receive the partition 2 and this plate D is also provided with 2; depending socket or recessed portion D which works within the central chamber C of the cylinder 0. It will of course beunderstood that there will be as many rings in:

I) as there will be passages Cand the width of the opening D will in a measure depend upon the use to which the device is to be put, as it will be understood that this pump can be utilized for pumping either oil, water, air, or sand, or a'mixture of any liquid, and granular material.

E indicates the upper portion or cover of the casin being Secured to the cylinder G by means 0 bolts E. This upper portion or cover is made with considerable thickness at the center in order to provide a suitable the eccentric bushing F said bushing fitting snugly within the socket D of the piston. This eccentric bushing is secured by means'of a. bolt F threaded into the bottom v the shaft.

of the bushing as shown at F", said bolt extending upwardly through the shaft F and fastened by means of a nut F By means of this construction the nut can be loosened and the bolt F turned in either direction for the purpose of adjusting the position of the bushing upon the eccentric end of the shaft whereby the throw of the piston '2, n be ad jnsted and after the bush1ng has been adjusted the nut F is tightened and the bush- 1ng will be locked firmly upon the end of It will thus be seen that I provide for the adjustment of the parts without necessitating the opening of the cylinder or casing. Any suitable form of wheel or ulley can be connected to the upper end of the shaft F for the purpose of imparting arotary motion and in the drawings I have shown a .hand wheel F so constructed as to be coupled or connected with any rotating member..

It will be understood that as the shaft F is rotated the piston will be given an eccentric oscillating movement so that the ring portions D will be caused to recede from the ring portions approach and constantly providing sector shaped chambers into to pin G formed upon the plate D, said block serving to guide the movement of the piston andprevent the'ends of the rings coming in contact, with the partition wall. The cover E is also-provided with an inlet passage H,

to which a connection pipe H is attached for the purpose of applying oil under pressure upon the top side of the piston and inasmuch as a constant pressure will be maintained upon the said top'side of the piston the oil will be forced into contact with the moving parts and said parts will not only be sealed but also lubricated and consequently the liquid being drawn or forced through the device will not be able to work past the piston.

By employing a plurality of rings I am able to convey the liquid from one ring or stage to another ring or stage and by referring to Fig. 1 it will be noted that I is the intake pipe, which enters the lowest port and which communicates with the inner most ring and the liquid so introduced carried around and discharged from the lowermost ort into a connecting pipe K, which exten s from the lowermost port on one side to the next higher port on the opposite. side, and from there the liquid is carried around and discharged from the port opposite into the connecting pipe K and after being carried around, is discharged through the outlet or discharge pipe 1. Connecting the outlet or discharge pipe I is a ipe L, which extends from the outlet pipe to the com necting pipe K and is provided with valves L upon opposite sides of a central connection L which in turn carries a gage and is connected with the pressure connection H. By the proper mani ulation of the valves L the pressure upon tie top side of the piston can be made to balance the pressure upon the lower side of said piston thereby providing a perfectly balanced piston whereby the pressure or friction is reduced to a minimum and-the efficiency of the pump correspondin ly increased.

0w it will be understood that the exterior connections I and I K and K, andpipe L can be changed or shifted as desired in order to provide for the various operations of the device and in Fig. 15 I have shown a diagram of the construction illustrated in Fig. 1, whereas in Fig. 16 air'is taken inat the first stage and discharged through the third stage and the second ring or stage is utilized for the purpose of operating the air suction and discharge, the water serving as a motive power. In Figs. 17, and 18, I have shown other forms of connection in which the pressure pipe is connected at various points and 111 Fig. 19 I have shown the pressure pipe 00 uiecte'd with the connection pipes in series, check valves being arranged to prevent back pressure.

In Figs. 12 and 14 it will be noted that the partition walls 0 are arranged alternately at difierent points, in the resent instance at angles of 90 degrees but it will bf course be understood that the can be arranged at any angle desired, and the openings in the ditious and by means of. this construction liquid can be taken from the exterior port C and discharged in compressed form through the interior port G or the reverse operation can take place. By means of this construction I can provide a.simple and efficient form of air compressor or "vacuum producer according to the direction of motion and it Will also be understood that by arranging the partitions in alternating and broken joint form I completely overcon'le the danger of the dead center.

It will thus be seen that I provide a simple and etlicient form of device which can be used as a pump or a motor or both combined and which will carry out. all of the objects hereinbefore referred to.

.lt will be understood that this invention is susceptible of a variety of changes or alterations without departing from the broad principle of the invention and consequently I do not Wish to be confined to the exact t'e: tures of construction and combination her ein shown and described.

Having thus fully described lny invention, what I claim as new and desire to secure by Letters Patent, is: n i

1. In a. device of the kind described, a casing provided with a concentric passage having ports communicating therein. a pist n provided with a divided concentric ring and having a central socket, a rotary eccentric fitting in said socket; and adapted'to im )art an oscillatory motion to said )iston a bushing arranged within the socket and surrounding the eccentric and a rod rigidly connected to said bushing and working through the eccentric, said rod being adjustable for the purpose of adjusting the bushing, as set forth.

2. In a. device of the kind described, a casing having a concentric passage having ports communicating therewith, a piston having a concentric divided ring and a central socket, a rotary eccentric for imparting an oscillatory motion to said piston, a bushing surrounding said eccentric, means for adjusting said bushing,- together with means for introducing pressure upon the rear side of the piston.

3. In a devi ceof the kind described, a casing having concentric passages, piston having concentric rings, means for-imparting an oscillatory movement to said piston together with means for applying liquid pressure uponthe upper side of said piston.

4. In a device of the kind described, the

'nected with the pressure pipe and coimo combination of a casing and. piston, said casing having inlet and outlet ports, exterior connections connected with said ports and a connection between one or more 0 the exterior connections and the upper side, of the piston, as set forth.

5. In a device of the kind described, the combination with the asing and piston and cover, means for imparting motion to the piston, said casing having inlet and outlet ports, exterior connections connected with said ports, a pressure pipe leading into the cover, and a connection between said pres sure pipe and the exterior connections as set forth.

6. The combination with the casing, piston, and cover together with means for ope -ating the piston, said casing having inlet and exhaust ports, a pressure pipe leading into the cover and a pipe connecting said pressure pipe with the exterior connections, said pipe having one or more valves for the purpose specified.

In a device of the kind described, the combination with a casing having a plurality of concentric passages, each passage having a partition, the alternate partitions being arranged out .of alinement, of a piston having a plurality of concentric rings, each ring being divided at one point, the alternate division points being out of alinement, for the purpose specified.

5w. casing having a plurality of concentric passages having inlet and outlet ports communicating therewith, of exterior connections connected with said ports, a piston having.

In a device of the kind described, a

mcentric rings, a cover, a shaft working in said cover and adapted to impart an oscillating movement to the piston, a pipe connecting the exterior connections, valves carried by said pipe and the connection between said pipe and the pressure pipe, sub- 19 stantially as described.

9. In a device of the kind described, the combination with the casing, piston, cover and operating means constructed .as de-v scribed, said casing having inlet and outlet ports, the cover being provided with a con uection whereby pressure can be applied to the upper side of the piston, exterior connections connected with the inletand outlet. ports, said exterior connections being in! changeable or adjustable and a pipe t.- ing the exterior connections upon-the inlet and outlet sides whereby pressure upon the piston-.isbalanced or equalized as set fort GEORGE E. NEISON. Witnesses ERCY H. Moore, 'GHAB. E. BROOK. 

